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International Journal of Analytical Chemistry
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International Journal of Analytical Chemistry
/
2011
/
Article
/
Tab 5
/
Research Article
A New Spectrophotometric Method for Determination of Selenium in Cosmetic and Pharmaceutical Preparations after Preconcentration with Cloud Point Extraction
Table 5
Determination of selenium in Selen plus capsule.
Sample taken (mL)
Se (ng mL
ā1
)
Recovery (%)
% RSD for triplicate measurements
added
1
0
37.54
ā
1.88
1
10
47.33
97.9
2.08
1
20
56.70
95.8
1.93
1
30
66.18
95.4
2.12